[lug] 2D cards

[Tkil]

>>>>> "Zan" == Zan Lynx <zlynx at acm.org> writes:

Zan> And of course if you're using DVI to a LCD panel, none of that
Zan> matters.  Bits are bits.

Not entirely true.  Clean signal at the frequencies required to drive
multi-megapixel displays is non-trivial.

Think about it this way: the latest monitors are the 30" LCD
behemoths, which are at least 4MP.  Refreshing them with 24-bit data
at 60 frames per second yeilds

   4MB * 24bpp * 60 = 5.76 Gbps

That's non trivial.

Granted, its failure should be binary (it either works or it doesn't)
but it's possible that a sufficiently cheap card / PHY and cable could
lead to a DVI-D connection that glitches or has other transient issues.

This is also a part of length limitations on the cable (just as with
any digital signally protocol, there are physical effects that limit
how far the signal can go and still be usable).

t.